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Solve the System by Using the Inverse of the Coefficient 3x+5y=103x6y=9\begin{array} { l } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}

question 321

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Solve the system by using the inverse of the coefficient matrix.
- 3x+5y=103x6y=9\begin{array} { l } 3 x + 5 y = - 10 \\- 3 x - 6 y = 9\end{array}


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